Album: Stock-Recruitment Models
Stock-recruit models depict the relation between spawners, and fish that return to spawn from those initial spawners.

An overview of the 4 primary management regions, and numerous sub-regions for the State of Alaska. These areas are subdivided even further, for individual stock management.
AlaskaMNGMT_Regions

Total catch of all species, between 1880 and 2002 for all of Alaska. Not the increasing proportion of hatchery fish after the 1980s. From Adkinson and Finney, 2003

AlaskanCatch_1880

Variations in salmon derived nutrients over the past 300 years at sites with and without spawning populations. Note also the general correlation between sea surface temperature, and cycles of abundance.
Finney_300yr

Geographic context for Bristol Bay, Kvichak, and Alagnak (Branch river)

BristolBay_Fair_2003

Temporal context - annual fluctuation at Bristol Bay, 1893 - 2002.

1893-2002_Fair_2003

50 years of escapement and catch in Bristol Bay (1955 - 2002)Cycles of anbundance influence both the escapement and the total catch. Catch value is included for the past 20 years. Note that harvest amounts hover around 50%, but their range can be large. From Adkinson and Finney, 2003

Escapement_Catch_BB

BroodCylces_Fair_2003

Catch_Esc_Rate_Fair2003

Actual escapements often fall within the range of predicted escapements - but not always.
EscapementGoals_Fair_2003

PrePostRicker_Knudson_2003

FoodWeb_Cederholm *

Geologic context of fluctuating sea-levels over time. Salmon evolved in a context of continued, sometimes dramatic change.

SeaLevel Curve_2 *